WITZMAN B752 3-in-1 briefcase backpack for men with 33.5L organized laptop storage

Convertible laptop backpack briefcase for men with hidden shoulder straps and multiple business travel pockets

Gray business travel backpack for men with dual main compartments and 15.6 inch laptop sleeve

Men's convertible briefcase backpack with USB-A and USB-C charging ports for work and travel

33.5L carry on business backpack with luggage sleeve laptop compartment and detachable shoulder strap

Professional laptop messenger backpack for men with water-resistant nylon exterior and PU leather handles

3 in 1 laptop bag for men convertible between backpack briefcase and crossbody shoulder bag

WITZMAN B752 3-in-1 briefcase backpack for men with 33L organized laptop storage

WITZMAN

3-in-1 Laptop Briefcase Backpack - B752

$143.00 AUD

Color: Black

Black
Silvery Grey

Product variants

Secure payment system

Move from a meeting to the commute with the B752 convertible laptop briefcase backpack.

Two main compartments separate work gear and clothing, with padded storage for a 15.6-inch laptop and an 11-inch tablet. Hidden backpack straps and a removable shoulder strap offer three carrying formats. USB-A and USB-C ports require your own power bank; no battery is included.

MORE DETAILS

3-in-1 convertible carry: switches between backpack, briefcase and crossbody shoulder bag
33L organised capacity: practical room for clothing, electronics and business essentials
Dual main compartments: separates work gear from clothing and travel items for easier packing
Dedicated tech storage: padded sleeves fit up to a 15.6" laptop and 11" tablet
Multiple organiser pockets: 5 internal open pockets, 1 zip pocket and multiple exterior quick-access pockets
USB-A + USB-C charging ports: connect your own power bank inside for convenient device charging
Hidden backpack straps: shoulder straps store neatly when using the bag in briefcase or shoulder mode
Stowable carry handle design: helps maintain a cleaner, more professional silhouette when not in use
Detachable shoulder strap: adds a comfortable crossbody or single-shoulder carrying option
Rear luggage sleeve: secures the bag over a rolling suitcase handle for easier airport movement
Water-resistant nylon exterior: helps protect everyday contents from light moisture
PU leather handle accents: reinforce the business-oriented appearance and carrying comfort
Side utility pocket: convenient for a compact water bottle, umbrella or frequently used accessory
Carry-on oriented dimensions: designed around common airline cabin luggage requirements

SPECIFICATIONS

Model: B752
Capacity: 33L
Ideal Use: Business travel, office commuting, 2–3 day trips, work trips and city travel
Dimensions: 13"L × 8"W × 19"H (33 × 20.3 × 48.3 cm)
Weight: 3.96 lbs (1.8 kg)
Laptop Compatibility: Up to 15.6" laptop
Tablet Compatibility: Up to 11" tablet
Exterior Material: Water-resistant nylon
Lining: Polyester
Handle Details: PU leather wrapped handles
Carry Styles: Backpack, briefcase and crossbody / shoulder bag
Charging Interface: USB-A + USB-C external ports
Shoulder Strap: Detachable and adjustable
Backpack Straps: Stowable
Luggage Attachment: Rear trolley sleeve
Colour Shown: Gray / Black

Note: Designed around common airline carry-on dimensions, but cabin baggage rules vary by airline and fare class. Check your carrier before departure.

SHIPPING

Shipping cost:

Standard Shipping, Free Shipping
Express Shipping, Shipping cost: $6.99

Process time:

1-2 business days;

Shipping time:

[US,CA,UK,DE,FR] Standard Shipping, 2-7 business days;
Express Shipping, 2-4 business days
Worldwide Shipping, 7-14 business days

WARRANTY & RETURNS

Warranty:
All WITZMAN bags include a 1-year (365-day) limited warranty. Please review our Warranty Policy for coverage details.

Travel fit note:
Airline carry-on and under-seat limits vary by carrier, aircraft, and packing level. Compare the listed bag dimensions with your airline before travel.

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3-in-1 Laptop Briefcase Backpack - B752

Black

$143.00 AUD

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Product guidance

FAQs

Practical guidance on materials, fit, packing, care and everyday use—so you can choose with confidence and travel prepared.

Materials and durability
Packing and carry-on fit
Care, delivery and support

Please read our FAQs page to find out more.

What makes the B752 different from a standard business backpack?

The B752 is designed around three genuine carrying configurations rather than functioning only as a backpack. Its backpack straps can be stored when not needed, while the integrated handles and detachable shoulder strap allow it to function as a briefcase or crossbody bag. This makes it particularly useful for travellers who want backpack comfort in transit but prefer a more professional hand-carried format for offices, meetings or client visits.

Is 33L enough for business travel?

For many short business trips, 33L provides a useful middle ground between a daily laptop bag and a full-size travel backpack. The dual main compartment design allows clothing to be separated from electronics and work accessories. Packing capacity ultimately depends on clothing thickness and personal packing habits, but the B752 is designed for commuting, overnight travel and shorter business trips rather than extended luggage-heavy travel.

How does the laptop compartment protect electronics?

The B752 includes dedicated padded storage for up to a 15.6-inch laptop and an 11-inch tablet, keeping electronics separated from loose clothing and accessories. Because laptop dimensions vary even at the same advertised screen size, customers should compare the actual dimensions of their device before ordering.

How do the USB-A and USB-C ports work?

The USB connection requires a compatible power bank that you supply yourself. It is not a built-in battery or power source. Connect your own power bank with the appropriate cable and follow your airline's current rules when travelling with batteries.

Can the B752 be used as airline carry-on luggage?

Compare this model's packed dimensions and total weight with the allowance for your airline, route and fare. Cabin luggage and underseat personal-item limits differ. Neither cabin acceptance nor underseat fit is guaranteed, particularly when the bag is fully packed or expanded.